strong



y @uiten tstrsatent @ffice WALTER L. STRONG, OrY SAN FRANCISCO, CALIFORNIA, .A SSIeNon To Y HiMSnLn e. W. STRONG,l AND .L r. TAYLOR..

y Lon-s Patent No. 64,458, (zaad .my 7, 18.67.

' IMPROVED AMALGAMATOB..

To l@LWHOM rr M AY OONCERN:

Be itiknown that I, WALTER L. STRONG, of San Francisco, San Francisco county, State of California, have invented certain new and useful improvements in amalgamators, called Strongs UnionAmalgamator; and I do hereby declare lhe' following description and accompanying drawings are sullicicnt to enable any person' skilled in the art or science to which it most nearly'appertains to make and use my said invention without further invention or experiment. Y I l The nature of my invention is to'provide au amalgamator of such construction as to give the greatest effect to thc grinding surfaces.' This is attained by providing a pan, of the ordinary construction and material, with a central hub, around which revolve two hollow shafts, carrying two mullers, one above the other, which turn in opposite directions, thus thoroughly grinding the pulp, which is mixed with the mercury contained in the pan,

and the precious metals amalgamated. In .the drawings- Figure 1 represents 'a perspective view of my amalgamator for amalgamating the preconsjnetals contained in ores, with the side of the pan broken away.

Figure 2, a. side sectional elevation.

Figure 3 is'a part of the inullers, showing their position and direction.

Figure 4 is the die or false bottom.

Figure 5, an enlarged view of thevmechanism in the cap M.

Figure x y z,- are views-ofthe shoes o f the upper mull'ers.

Similar letters indicate like parts in each of the figures.. v

Alis a. pan constructed of metal, as may be most convenient, with a ce ntral hub, a, through which rises o,

shaft, B, which is revolved by the gear C and pulley b. Within the .pan is the muller, made with shoes c c constructed with a ball-and-socket joint, as shownat d, and fastened to the arms D by nuts.v The inner end ot' each sho'e has a lug e, which passes into the hollow shaft E and keeps the shoes in place, while they have sutilcient motion to adapt themselves to the irregularities of the surface over which they pass, and present at all times the most effective surface for grinding. The arms I) are fastened to the hollow shaft E, which rises above the hub a, and is 'secured to the shaft'B by afeathcr. Fis another hollow shaft, turning loosely outside of tho shaft E, and having' at the bottom the arms G G, to which are attached the shoes g g, with. ball-and-socket joints, shown at'z. y, fig. 6, is a hook or lug on the back part of the shoe, which passes into a slot in the arm G, thus keeping the shoe in position. The lower muller is raised and lowclcd by the inclined plane or wedge t', operated by theiscrew I'and hand-wheel J. The upper muller is regulated by the screw K, resting on the top of the shaft B. The cap M contains the mechanism for turning the uppe'r'muller, and is plainly shown in fig. 5. L is a toothed wheel, having a feather-in it, which passes into a corresponding slot in the shaft B. Around this wheel L are foiir or other s uitable number of wheels m m, the. tgeth of which engage those of the centralwhecl. These' wheels engage the teeth on 'the inside of lthe rim n, which is secured to thc cap M and shaft F. O is anal-m or wrench with ahead, fitted to the shaft P, to prevent it, with thc wheels own', from turning, and-is let into the slot.. R in theside of the pan, and secured by aset-screw. s s s are grooves in the dies to contain Athe mercury, which is also in the space t t. Around the die T is a discharge pipe.`

To show the opcrationof my invention, the shaft B is set in motion by its attached gear and pulley, and

turns the lower muller in tlr' same direction by means of the hollow shaft E keyed to B. The motion of the shaft B sets the wheel L in motion, turning the wheels m m in an opposite direction, togethcrwith the rim n and its,-

-attached cap M and shaft F, thus turning 'the upper muller in a contrary direction trojthe lower one. The y toothed wheels are. so graduated in size as to give a speed to the two mnllers proportion atodias may be found most' r .eiectii/e. When it is desired to have both mullers turn in the same direction the wrench O ,is detached from the socket R andraisedup to a point whore 'the shaft P is small enough to-revolvc free from'it, when the whole will-turn with the lower `mullcr. l The vdischarge pipe being bcntean be turned up so that its end will betuxtolv the pulp till needed.

The advantagesgnined by the use of my ainalgamator are,"irst, a more thorough pulveiizing and grinding of thQ'puIp, und a greater facility for 'bringing evrypart into'contact with the mercury, so as to amalgamatc '.he precious metals; second, the shoes are ensil "rom the manner of attaching them to arms, present the most effective grinding'surface.

. Having thus described-my invention, what I claim, and desire to secure by Letters Patent, is-

1. The shoes c c and g g, in combination with .iully as and for the purpose describcd.

2. The geared Wheels-L m m, and the rim n, in combination with the shaft F and muli-ei G g, as described.

'3. The Wrench O, with the shaft-P, operating upon the wheels m m, rim n, and sha-ft F, sixbstnntially as .nd for the purpose described.

In witness whereof I have hereunte sc t my hzin y detached and replaced in the event of wcm' or breakage, and,

d and seal this 17th day of July, 18661 WALTER L. STRONG. [L 8.] Witnesses:

0. W. M. SMITH, Gso. H. STRONG.

the attechingjintsd and z, and the arms D :md G, Substan- 

